Ha, forgot to post the update, sorry...
I got a connection but with a different laptop running Winblows7 64b - drivers are everything...
However, I just couldn't get out of the "timeout" problem, the boot file is just not being transferred and whatever else I try - not working...
There are various possibilities and I am not an IT educated person, so I tried all kinds of combinations: NET connection, USB TTL cable, together, only "Burn Fastboot" and other possibilities but...
I think for reflashing with repartitioning one needs an xml file with partition addresses - but I don't have one. Can anyone make it, please? I can't get it from Huawei (owners of HiSilicon), sadly, despite a 'gentle request'...
Anyone with ideas/knowledge/experience, please?